“Asymmetric simple exclusion process”的意思、由来-开放百科全书

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Asymmetric simple exclusion process

释义

Sources
References

In probability theory, the asymmetric simple exclusion process (ASEP) is an interacting particle system introduced in 1970 by Frank Spitzer in Interaction of Markov Processes. Many articles have been published on it in the physics and mathematics literature since then, and it has become a "default stochastic model for transport phenomena".^[1]

The process with parameters is a continuous-time Markov process on ,

the 1s being thought of as particles and the 0s as holes. Each particle waits a random

exponent mean one amount of time and then attempts a jump, one site to the right

with probability and one site to the left with probability . However, the jump is performed only if there is no particle at the target site. Otherwise, nothing happens and the particle waits another exponential time. All particles are doing this independently of each other.

The model is related to the Kardar–Parisi–Zhang equation in the weakly asymmetric limit, i.e. when tends to zero under some particular scaling. Recently, progress has been made to understand the statistics of the current of particles and it appears that the Tracy–Widom distribution plays a key role.

Sources

1. ^{{cite journal|last=Yau|first=H.T.|author-link=Horng-Tzer Yau|title=(log t)^2/3 law of the two dimensional asymmetric simple exclusion process|journal=Ann. Math. |year=2004|volume=159|pages=377–405|doi=10.4007/annals.2004.159.377|arxiv=math-ph/0201057}}

References

{{Citation

| last=Spitzer | first=Frank |author-link = Frank Spitzer
| year=1970
| title=Interaction of Markov Processes
| journal=Advances in Mathematics
| volume=5 | issue=2 | pages=246–290
| doi=10.1016/0001-8708(70)90034-4}}.

{{Citation

| last1=Tracy | first1=C. A. | author1-link = Craig Tracy
| last2=Widom | first2=H. | author2-link = Harold Widom
| year=2009
| title=Asymptotics in ASEP with step initial condition
| journal=Communications in Mathematical Physics
| volume=290 |issue=1 | pages=129–154
| doi=10.1007/s00220-009-0761-0
|arxiv = 0807.1713 |bibcode = 2009CMaPh.290..129T }}.

{{Citation

1 : Statistical mechanics

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